Improvement in locks



J. R. WINSOR. Look.

No. 218,805. Patented Aug. 19, I879.

WITNESSES ATTORNEY-S N-PETERS, PHOTO-LITHOGRAPNER. WASHIINGTDN' D c.

UNITED-STATES PATENT OFFICE.

JIRAH R. wiNso on PERRY, IOWA, ASSIGNOR or ONE-HALF fnis RIGHT TO ORA WINSOR, or SAME rLAon.

IMPROVEMENT IN LOCKS.

Specification forming part of Letters Patent No. 218,805, dated August 19, 1879; application filed June 7, 1879.

To all whom it may concern:

Be it known that I, JIRAH R. WINso of Perry, in the county of Dallas and State of Iowa, have invented certain new and usefullmprovementsin Locks; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawings'is a representation of an interior of my lock. 'Fig. 2 is a longitudinal sectional view; and Fig. 3 is a view of the key.

Identical parts in the drawings are designated and referred to by the same letters.

-My invention relates to looks; and it consists in the improvements in the construction of the same hereinafter fully described, and particularly pointed out in the claims.

A represents the lock-bolt, which is provided with the head a, which enters the retaining-plate on the door-casing, and the spring a, which engages the standard a? of the case of the lock and keeps the body of the bolt pressed against the stem a of the case, or against the key when the bolt is being.

.preserves the proper position of the bolt by contact with the case-plates O and O upon its inner and outer sides. 0 is the rear plate of the lock-case, and O is the removable plate of the same. t

The lock-bolt A is also provided with the transverse bolt 1), which works freely in asuitable opening in the body of the bolt A. This bolt D is provided with the plate at and the projecting head d", and the spring d forces the head all against the case in a manner that will cause it to enter the opening d in the plate 0, if not otherwise prevented.

D is the recess in the body of the bolt A, in which the key works to operate this bolt. The plate d of the bolt D extends over this recess. The key to operate this look is conin either direction, thestepe will raise'and carry the bolt D by contact with theaplate cl. The step e, by bearing upon the plate .O--or C owing to which side thekey has been inserted fI'O[1l-]101d$ the key in proper position to thus carry the bolt D over the opening 01 and perwit the bolt A to be operated. a In case a false key, or a key not having the points 6 e, is inserted, the spring d? will force the bolt D into the opening d of the case and arrest the key and the movement of the bolt, before the bolt has been withdrawn from the retaining-plate of the door-casin g. By this means the movement of the bolt will be permanently arrested. 'Ihis bolt A is also provided with the openings a and a, which are connected by the passage (6 g The bolt A is thrown out bythe key to the position indicated by the full lines.; When the key is removed thev spring B withdraws the bolt, so as to cause the stem a to enter'the recess formed in the opening a by the flange a. This stem (0 thus securely holds the bolt Ain a locked or outward position. i I

To disengage the stem at from this recess, the properly-fitted key will first. engage the .incline 0 of the notch D and carry the bolt outward sufficiently to relieve the flange a from the stem a when the key will raise the inward end of the bolt A and withdraw it from the retaining-plate of the door, passing the stem into the recess a". The spring a? returns the bolt to its horizontal position upon the withdrawal of the key. I

The operation of the lock is as follows: The bolt A being in an outward-position, the key, upon being inserted and force applied to its bow, first engages the incline'e and by passing the bolt outward releases the stem a from the flange a The key then raises the plate 11 and bolt D, and carries the same in an upward position and over the opening 61 in the case. In the meantime thev stem a is transferred from the recess a through the passage a into the recess a In looking, the key first raises the bolt A and. passes it forward, the recess a being again in contact with the stem The knob-stem F is provided with the annular groove f, which receives and retains the arm f l of the shaft F. This annular groove is to permit the knob to be turned after the manner of the common knob without operating the latch or injury to the same. f is a spring attached to the shaft F, to return the arm f and the latch f to the position indicated in the drawings. f is the latch, which, as the door is closed, engages the catch on the door-casin g, and is turned up as shown in dotted lines. Upon entering the catch the latch returns to position indicated in the drawings by the action of the spring f.

To open the door the knob is either pulled or pushed as required, which places the latch in nearly a horizontal position. when it will freely pass from the catch and be returned to position shown by the action of the spring f Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a lock, the bolt A, provided with the recesses a a and connecting-passage a", and the flange a, in combination with the springs a and B, as and for the purposes substantially as set forth.

2. In a lock, the bolt A, provided with the spring (1 and a suitable opening for the bolt of two witnesses.

J. R. WINSOR. Witnesses:

R. S. CROSS, E. S. DAYTON. 

